diff --git a/custom_components/localthings/number.py b/custom_components/localthings/number.py
index 2d8358b..ab04589 100644
--- a/custom_components/localthings/number.py
+++ b/custom_components/localthings/number.py
@@ -58,6 +58,9 @@ class LocalThingsNumber(LocalThingsEntity, NumberEntity):
 
     @property
     def native_min_value(self) -> float:
+        desc: NumberDesc = self._bound.desc
+        if desc.native_min_fn is not None:
+            return desc.native_min_fn(self.coordinator.resource(self._bound.href))
         r = self._range_from_resource()
         if r is not None:
             return float(r[0])
@@ -67,6 +70,9 @@ class LocalThingsNumber(LocalThingsEntity, NumberEntity):
 
     @property
     def native_max_value(self) -> float:
+        desc: NumberDesc = self._bound.desc
+        if desc.native_max_fn is not None:
+            return desc.native_max_fn(self.coordinator.resource(self._bound.href))
         r = self._range_from_resource()
         if r is not None:
             return float(r[1])
@@ -74,6 +80,15 @@ class LocalThingsNumber(LocalThingsEntity, NumberEntity):
             return self._attr_native_max_value
         return super().native_max_value
 
+    @property
+    def native_step(self) -> float:
+        desc: NumberDesc = self._bound.desc
+        if desc.step_fn is not None:
+            return desc.step_fn(self.coordinator.resource(self._bound.href))
+        if hasattr(self, '_attr_native_step'):
+            return self._attr_native_step
+        return super().native_step
+
     @property
     def native_value(self):
         return (self.coordinator.data or {}).get(self._state_key)
diff --git a/custom_components/localthings/registry/by_type/oven.py b/custom_components/localthings/registry/by_type/oven.py
index 2ae3341..c4028ce 100644
--- a/custom_components/localthings/registry/by_type/oven.py
+++ b/custom_components/localthings/registry/by_type/oven.py
@@ -14,5 +14,6 @@ REGISTRY = DeviceRegistry(
         oven.OVEN_OPERATIONAL_STATE,
         oven.OVEN_DOOR,
         oven.OVEN_CONNECTED,
+        oven.OVEN_SPEC,
     ]),
 )
diff --git a/custom_components/localthings/registry/capabilities/oven.py b/custom_components/localthings/registry/capabilities/oven.py
index 7d66b8b..2eadfc4 100644
--- a/custom_components/localthings/registry/capabilities/oven.py
+++ b/custom_components/localthings/registry/capabilities/oven.py
@@ -39,6 +39,15 @@ SETPOINT_MIN_C = 30
 SETPOINT_MAX_C = 270
 SETPOINT_STEP_C = 5
 
+# Verified against issue #44's range dump (NSI6DG9100SRAA, unit reported as
+# "Fahrenheit" on /temperatures/vs/0): Bake mode's modeSpec on /mode/vs/0
+# reports tempMinF/tempMaxF/tempIntervalF = 175/550/5. Kept as a separate
+# constant set rather than converted from the Celsius bounds above, which
+# are themselves unverified (no live dump; see module docstring).
+SETPOINT_MIN_F = 175
+SETPOINT_MAX_F = 550
+SETPOINT_STEP_F = 5
+
 # Mode options seen on NV7000BS-class. No dump exists so this list is inferred
 # from Samsung documentation and firmware observations. The firmware will
 # reject unknown modes; missing entries here are a coverage gap, not a bug.
@@ -129,8 +138,9 @@ def _oven_setpoint_write(p, rep, href=None):
         temp = float(p)
     except (TypeError, ValueError):
         return None
-    temp_i = int(round(temp / SETPOINT_STEP_C) * SETPOINT_STEP_C)
-    if not (SETPOINT_MIN_C <= temp_i <= SETPOINT_MAX_C):
+    min_v, max_v, step_v = _setpoint_bounds(rep)
+    temp_i = int(round(temp / step_v) * step_v)
+    if not (min_v <= temp_i <= max_v):
         return None
     items = rep.get('x.com.samsung.da.items')
     if not items:
@@ -263,14 +273,24 @@ def _oven_temp_unit(rep):
     same aggregate `/temperatures/vs/0` items[] resource type, which on
     fridge hardware carries a per-item `x.com.samsung.da.unit` field
     ('Celsius'/'Fahrenheit') that was previously hardcoded away (issue #7).
-    No live oven dump has surfaced a non-Celsius reading yet, so this keeps
-    the verified '°C' default when the field is absent, but reads it live
-    if a device ever reports otherwise."""
+    Keeps the verified '°C' default when the field is absent (the original
+    NV7000BS-class dump this module was written against), but reads it live
+    -- issue #44's range dump is the first to report 'Fahrenheit' here."""
     items = rep.get('x.com.samsung.da.items') or []
     unit = items[0].get('x.com.samsung.da.unit') if items else None
     return normalize_temp_unit(unit, default='°C')
 
 
+def _setpoint_bounds(rep):
+    """(min, max, step) for the live unit -- see the SETPOINT_*_C/_F
+    constants above for provenance. Bounds must track the unit shown by
+    unit_fn (both read the same live rep), or the HA slider's range would
+    silently mismatch its own displayed unit."""
+    if _oven_temp_unit(rep) == '°F':
+        return SETPOINT_MIN_F, SETPOINT_MAX_F, SETPOINT_STEP_F
+    return SETPOINT_MIN_C, SETPOINT_MAX_C, SETPOINT_STEP_C
+
+
 OVEN_SETPOINT = Capability(
     href='/temperatures/vs/0',
     poll_tier='hot',
@@ -280,6 +300,9 @@ OVEN_SETPOINT = Capability(
                    name='Setpoint', device_class='temperature', unit_fn=_oven_temp_unit,
                    native_min=float(SETPOINT_MIN_C), native_max=float(SETPOINT_MAX_C),
                    step=float(SETPOINT_STEP_C), icon='mdi:thermometer-chevron-up',
+                   native_min_fn=lambda rep: float(_setpoint_bounds(rep)[0]),
+                   native_max_fn=lambda rep: float(_setpoint_bounds(rep)[1]),
+                   step_fn=lambda rep: float(_setpoint_bounds(rep)[2]),
                    value_fn=lambda items: _int(
                        (items[0].get('x.com.samsung.da.desired') if items else None)),
                    write_fn=_oven_setpoint_write),
diff --git a/custom_components/localthings/registry/entities.py b/custom_components/localthings/registry/entities.py
index e1b98fc..322f83d 100644
--- a/custom_components/localthings/registry/entities.py
+++ b/custom_components/localthings/registry/entities.py
@@ -85,6 +85,13 @@ class NumberDesc(SamsungEntityDescription):
     native_min: Optional[float] = None
     native_max: Optional[float] = None
     step: Optional[float] = None
+    # Override native_min/native_max/step from the live rep, when set --
+    # same "static default, live override" shape as unit_fn, for resources
+    # whose sane bounds depend on a per-device value (e.g. a temperature
+    # setpoint reported in Celsius on one device, Fahrenheit on another).
+    native_min_fn: Optional[Callable[[dict], float]] = None
+    native_max_fn: Optional[Callable[[dict], float]] = None
+    step_fn: Optional[Callable[[dict], float]] = None
     range_field: Optional[str] = None  # resource field containing [min, max] list
     write_fn: WriteFn = None
 
diff --git a/tests/test_golden_regression.py b/tests/test_golden_regression.py
index a351bf8..2edbe74 100644
--- a/tests/test_golden_regression.py
+++ b/tests/test_golden_regression.py
@@ -203,7 +203,7 @@ def test_registry_reproduces_golden_state_keys_for_range():
     """Range/cooktop-oven combo (model TP1X_DA-KS-RANGE-0102X, issue #44) --
     reports no oneUiVersion; resolved via the '-RANGE-' modelNum token
     fallback in for_device_by_model. Reuses the oven family's cavity/
-    setpoint/mode/operational-state capabilities and adds cooktop.py's
+    setpoint/mode/operational-state capabilities and adds range.py's
     per-burner capabilities for the 4 burners this dump reports."""
     from tests.conftest import _load_device
     resources = _load_device('range')
diff --git a/tests/test_oven_capabilities.py b/tests/test_oven_capabilities.py
index 8799fa0..aafad2b 100644
--- a/tests/test_oven_capabilities.py
+++ b/tests/test_oven_capabilities.py
@@ -53,6 +53,46 @@ def test_oven_setpoint_rejects_missing_items():
     assert desc.write_fn(200, {}) is None
 
 
+# ---------------------------------------------------------------------------
+# OVEN_SETPOINT — Fahrenheit bounds (issue #44 range dump reports
+# unit="Fahrenheit"; bounds/step must track the live unit, not stay pinned
+# to the Celsius defaults)
+# ---------------------------------------------------------------------------
+
+def _fahrenheit_rep(desired='0'):
+    return {'x.com.samsung.da.items': [{
+        'x.com.samsung.da.desired': desired,
+        'x.com.samsung.da.unit': 'Fahrenheit',
+    }]}
+
+
+def test_oven_setpoint_write_uses_fahrenheit_bounds():
+    desc = oven.OVEN_SETPOINT.entities[0]
+    rep = _fahrenheit_rep()
+    # 350 is within F bounds (175-550) but above the C max (270) --
+    # confirms the write path isn't silently still clamping to Celsius.
+    _, body = desc.write_fn(350, rep)
+    assert body['x.com.samsung.da.items'][0]['x.com.samsung.da.desired'] == '350'
+
+
+def test_oven_setpoint_rejects_out_of_range_fahrenheit():
+    desc = oven.OVEN_SETPOINT.entities[0]
+    rep = _fahrenheit_rep()
+    assert desc.write_fn(100, rep) is None    # below F min (175)
+    assert desc.write_fn(600, rep) is None    # above F max (550)
+
+
+def test_oven_setpoint_native_bounds_track_live_unit():
+    desc = oven.OVEN_SETPOINT.entities[0]
+    celsius_rep = {'x.com.samsung.da.items': [{'x.com.samsung.da.unit': 'Celsius'}]}
+    assert desc.native_min_fn(celsius_rep) == 30.0
+    assert desc.native_max_fn(celsius_rep) == 270.0
+    fahrenheit_rep = _fahrenheit_rep()
+    assert desc.native_min_fn(fahrenheit_rep) == 175.0
+    assert desc.native_max_fn(fahrenheit_rep) == 550.0
+    assert desc.step_fn(fahrenheit_rep) == 5.0
+
+
 # ---------------------------------------------------------------------------
 # OVEN_MODE — SelectDesc with non-empty options
 # ---------------------------------------------------------------------------